
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
For Your Every Summer RSVP, with Code: SUMMER15
Description
GSC P-D D16/B18-21/ H23 Viton 6.6mm Seal Valve Stem Seal KitExperience enhanced engine performance and reliability with the GSC P D D16 B18 21 H23 Viton 6. 6mm Seal Valve Stem Seal Kit from GSC Power Division. Crafted specifically for D16, B18 21, and H23 engines, this kit features premium Viton material seals that provide excellent heat resistance and durability over conventional rubber seals. Viton seals help reduce oil leakage and improve valve guide longevity, ensuring your engine runs cleaner and more
Experience enhanced engine performance and reliability with the GSC P-D D16/B18-21/ H23 Viton 6.6mm Seal Valve Stem Seal Kit from GSC Power Division. Crafted specifically for D16, B18-21, and H23 engines, this kit features premium Viton material seals that provide excellent heat resistance and durability over conventional rubber seals. Viton seals help reduce oil leakage and improve valve guide longevity, ensuring your engine runs cleaner and more efficiently over time.Designed to meet the demands of high-performance engines, these valve stem seals are precision engineered to fit tightly and maintain consistent sealing under extreme conditions. Whether you're upgrading your road car or building a motorsport machine, this seal kit offers reliability you can trust. Installing these seals will help maintain optimal oil control without sacrificing engine responsiveness.
The kit includes multiple valve stem seals sized at 6.6mm, offering a perfect fit for the specified applications in the Honda D16, B18, and H23 series engines. The set is easy to install and backed by GSC Power Division's reputation for quality tuning parts. Give your engine the edge it needs with these essential valve seals that combine durability, performance, and precision engineering.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 2267 reviews
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Product Reviews
★★★★★ 5
They stay out! No more sock wads!
Size: Medium, Color: (100) White / White / Mod Gray
Best no show socks ever made!!!!! I've been struggling for 2 years to find ones that actually stay on your foot, even other national brands, and I just became content wearing my sneakers without socks. They ALWAYS slid down into my show & I ended up walking on a wad of sock until I could fix it...or usually just took them off after a couple of tries. Enter Under Armor!!! They a mid weight, but not very thick & still breathable. They work too by actually staying on your foot! Not once have they slid down into my show!! Very comfortable but they could be a little more affordable.
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Reviewed in the United States on August 1, 2025
★★★★★ 5
Love!
Size: Large, Color: (100) White / White / Mod Gray
Ive tried so many no show socks but I love these. This is the 3rd set I've bought. They never slip off and the material is thin and breathable. Perfect for working out.
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Reviewed in the United States on March 2, 2026
★★★★★ 5
True no-show socks that don’t slide down!
Size: Medium, Color: (100) White / White / Mod Gray, Size: Medium, Color: (100) White / White / Mod Gray
This is the first pair of no-show socks I’ve tried that actually don’t slide down into my shoes. Trust me… I have tried lots of different pairs and this is the one! They fit perfectly. They’re not too thick and they’re obviously durable because I wash them after each wear, so daily.
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Reviewed in the United States on March 21, 2026
★★★★★ 4
Great fit but expensive
Size: Medium, Color: (252) Blush Beige / White / Castlerock
These are really great socks. I love them, but they are definitely pricey.
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Reviewed in the United States on March 30, 2026
★★★★★ 5
Great socks!
Size: Medium, Color: (252) Blush Beige / White / Castlerock
Love these socks so much I got a second package. I like how thin and airy they are and they never slide down my heel. For thin socks they’re pretty durable.
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Reviewed in the United States on August 16, 2025